This is the terrifying moment an announcer at a stunt bike show was struck by a rider as he walked up the ramp.

Caina Silva, 24, remains in intensive care in a local hospital after the shocking accident, which saw the show in Barretos near Sao Paulo, Brazil, suspended.

The footage of the incident, which took place on Saturday, has been widely shared since.

Jeff Campacci, who was riding the motorcycle that struck Mr Silva, is said to have been left ‘devastated’ and, although the announcer was conscious when he reached hospital, he is now on a ventilator after suffering breathing problems.

Spectator Jair Luis de Carvalho has been quoted by local news source as saying: ‘He [Mr Silva] was in the biker’s blind spot.